Hello, welcome to HCM. The pain you have described has a untypical presentation. It could be due to any neurological involvement or even local muscular causes. The pain in groin could be due to hernia
which should be excluded by examining by your doctor. You should get and mri
of spine done to rule out any nerve
compression leading to your pain. So consult a neurologist
for that. Have over the counter pain killers for the pain till than. Wish you good health.